/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Included for types only.
// eslint-disable-next-line no-unused-vars
const express = require('express');

/**
 * @type {express.RequestHandler}
 */
const healthCheckHandler = (req, res, next) => {
  if (req.url === '/_check') {
    res.send('Ok');
    res.end();
    return;
  }
  return next();
};

module.exports = healthCheckHandler;
